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Need To Drop Decibels! Exhaust Question

FLUID

By FLUID,
in General Maintenance

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FLUID Enthusiast

FLUID

Posted
Posted

Hey, I've got a r33 na with an x-force cannon (4 1/2 inch) and want to get it quieter with less vibration that hurts your head after a while. I've installed the silencer and that's done alot but want to hear any ideas of fiberglass, cotton etc inside the cannon to get some quietness. Thanks

scotty nm35 Grand Master

scotty nm35

Posted
Posted

A Varex muffler would help, they are one of the best sound deadening mufflers I have found so far, and then you can close the flap to silence them if you need to. My 3.5 inch one doesn't drone much at all.

cherring Proficient

cherring

Posted
Posted

A Varex muffler would help, they are one of the best sound deadening mufflers I have found so far, and then you can close the flap to silence them if you need to. My 3.5 inch one doesn't drone much at all.

How did you set up the boost actuated Varex???

scotty nm35 Grand Master

scotty nm35

Posted
Posted

Does anyone in here have a car that can't be defected? At the end of the day the goal is to not be pulled over, the impression of a stock car is the key imo.

Unfortunately there are no aftermarket mufflers I can recommend to reduce noise to a legal level other than the closed Varex. Other than that you would be best off finding a S/H jap cat back with a Jasma label.

I have gone back to the Varex motor on mine as the varex valve was too tight and kept jamming. There are other options I am trying at the moment.

post-63525-0-09171300-1342655810_thumb.jpg

cherring Proficient

cherring

Posted
Posted

Does anyone in here have a car that can't be defected? At the end of the day the goal is to not be pulled over, the impression of a stock car is the key imo.

Unfortunately there are no aftermarket mufflers I can recommend to reduce noise to a legal level other than the closed Varex. Other than that you would be best off finding a S/H jap cat back with a Jasma label.

I have gone back to the Varex motor on mine as the varex valve was too tight and kept jamming. There are other options I am trying at the moment.

Exactly, I think even my FMIC can defected can't it, just don't fail the dick head test if you do get pulled over.

The boost controlled varex looks interesting, shame it didn't quite work, and am interesting in hearing what you come up with.

mad082 Grand Master

mad082

Posted
Posted

Does anyone in here have a car that can't be defected? At the end of the day the goal is to not be pulled over, the impression of a stock car is the key imo.

Unfortunately there are no aftermarket mufflers I can recommend to reduce noise to a legal level other than the closed Varex. Other than that you would be best off finding a S/H jap cat back with a Jasma label.

I have gone back to the Varex motor on mine as the varex valve was too tight and kept jamming. There are other options I am trying at the moment.

there are plenty. any exhaust shop could sell you about 10 different ones that would, but few people would want them on their imports as a: they aren't fully hektic cannons, and b: they aren't a straight through type (so don't flow as well). but even a decent flowing muffler used with a decent centre muffler will give you exhaust levels below the legal limit. a non performance orientated muffler will be built in the same way as a stock one and give the same level of noise attenuation

scotty nm35 Grand Master

scotty nm35

Posted
Posted

but even a decent flowing muffler used with a decent centre muffler will give you exhaust levels below the legal limit. a non performance orientated muffler will be built in the same way as a stock one and give the same level of noise attenuation

With a 3.5 inch system? You have to be kidding... Most of my customers want 300kw at least these days, with two free flowing mufflers. There aren't many on the market that cater for low noise along with the flow, especially in stainless.

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